dresser



(ModeL) 2 Shets-Sheet 1.

. S. P. DRESSER,

WOOD SA'WING MACHINE.

Patented Jan. 19,1886;

I IN'VENTOR ATTORNEYS.

(ModeL) 2 sheets-sheet 2.

S. P DRESSER.

v W001) SAWING MACHINE, No. 334,574. Patented Jan. 19, 1886.

ATTORNEYS. v

UNITED STATES PATENT OFFICE.

SAMUEL P. DRESSER, OF PLEASANT MOUNT, MISSOURI.

WOOD-SAWINGI MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,574, dated January19, 1886.

Application filed June 2, 1895. Serial No. 167,407. (Model) 7 To allwhom it may concern:

Be it known that I, SAMUEL P. DRESSER, of Pleasant Mount, Miller county,Missouri, have invented a' new and Improved Vood- Sawing Machine,ofwhich the following is a full. clear, and exact description.

The object of my invention is to provide a new and improved wood sawingmachine which can be operated by one or two persons, runs easy, and issimple in construction. The invention consist-s in the construction andcombination of parts and details, as will be fully set forth anddescribed hereinafter, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal view of my improved wood-sawing machine. Fig.2 is a plan view of the same. Fig. 3 is a cross-sectional elevation ofthe same on the line .70 :10, Fig. 1. Fig. 4 is a cross-sectionalelevation on the line yy, Fig. 1. Fig. MS a detail plan view of the endof the saw-holder.

The shaft A is journaled transversely in an upright frame, A, and isprovided at one end with a crank, A and at the opposite end .with acog-wheel, A having a crank-handle, A. The cog-wheel A engages with apinion, B, on the outer end of a shaft, B, journaled in the frame A, andprovided on its inner end with a crank, B". A fly-wheel, O, is mountedon the shaft B. A pitman, D, is pivoted to the crank B and the front endof the pitman is pivoted by a pin, D, in the forked piece E on thebutt-end of the saw-blade F. The piece E is the shank of the saw, beingrigidly fixed tothe blade as a base of attachment for the lever Handpitman D and the spring P. This piece E might be dispensed with and thesawblade be attached directly to the lever H, and the pitman D and thespring P be pivoted to the saw-blade, as it now is to the saw-shank. Thepin D also passes through an aperture in the lower end ofalever, H,pivoted at its upper end on a standard, H, on' one of the two bars J,projecting from the upright frame A. The lever H is composed of twolongitudinally-slotted overlapping pieces, which can be locked togetherby means of a bolt, K, and

wing-nut K. By lengthening or shortening the lever H the saw can beraised or lowered, accordingto the diameter of the log, beam, &c., to besawed. The bars J are united near the front ends by a cross-piece, L,from the bottom of which a transverse slit or slot, L, extends upwardand serves to receive the saw-blade F. Abinding-screw, M, is screwedthrough one bar J and through one end of the cross-piece, and is of suchlength that its inner end can bind on the saw-blade F in the slit L.' Ascrew, N, having a head, N', is screwed through the end of one bar J andinto the log 0, for the purpose of holding the free ends of the saidbars on the log. A strong spring-band, P, has one end secured on a pinprojecting from the side of the piece E at the butt-end of the saw, andthe other or rear end of the spring is secured on a flat bar, Q, pivotedat its rear end to the side of the'pitman D, and having a slot, Q, nearits front end, through which a pin or bolt, Q

projects from the pitman. A thumb-screw, B, is held above the bar Q in alaterally-projecting lug, S, on the pitman D. One or more hooks orclamping-dogs, U, are pivoted to one or both bars J, to hold thefrontends of the same in place on the log 0. The upright frame A is securedon a base, G.

The operation is as follows: The saw-blade F is held in the cross-pieceLby the screw M, and the ends of the bars J are placed on the log orbeam 0 and held in place by the screw N and the hooks or dogs U. The barH is lengthened or shortened according to the thickness or diameter ofthe beam or log.

Thenthe saw-blade is released by loosening the screw M, and the saw isrocked forward or back to cut a kerf in the 1.0g. Then the machine isoperated by revolvingthe shaft A either by means of the crank A orhandle A or both. The saw is reciprocated rapidly, and makes a cleanstraight cut. The spring I? presses the saw-blade downward on the bottomof the kerf, and the pressure of the saw on the bottom of the kerf canbe adjusted by means of the screw R, as by turning the screw B down itexerts a greater pressure on the spring, which in turn exerts a greaterpressure on the blade. After the blade has cut through the log it israised and held by the screw M in the cross-piece L, so as not tointerfere with shifting the machine. The pressure of the saw on the logis greatest when the saw is drawn toward the operator, as the pitman andsaw are at the greatest angle at that time, which causes the spring topress harder and the saw to cut deeper.

Having thus described my invention, I claim as new and desire to secn reby Letters Patent 1. In a sawing-machine, the eombination, with theupright frame A and the bars J, of a reciprocating saw-blade, gearingand levers for operating it, and a cross-piece uniting the bars J, andhaving a binding-screw for holding the blade, substantially as hereinshown and described.

2. In a sawingmachine, the combination, with the upright frame A and thebars J, of a reciprocating saw-blade, gearing and levers for operatingit, the cross-piece L, uniting the bars I, and having a slot, L, and ofthe screw M in the cross-piece, substantially as herein shown anddescribed.

3. In a sawing-machine, the combination of the pitman D, the saw pivotedat itsshank thereto, the lever Q, pivoted to the side of the pitman, thespring P, secured to the said lever and pivoted to the saw-shank, thelug S on the pitman, and the screw R, passing through the said lug andbearing against the spring between its points of attachment to the pitman and said shank, substantially as shown and described.

4. In a sawing-machine, the combination of the pitnian D, the saw-bladeF, pivoted at its shank thereto, the lever Q, pivoted to the side of thepitman and having a slot, Q, the pin Q projecting from the pitmanthrough the said slot, the lug S on the pitman, the screw R in the same,and the spring I, secured to the lever Q and to the saw-shank,substantially as shown and described.

5. In a sawing-machine, the combination, with the standard H and theextensible lever H, pivoted to the standard H, of the pitman I), meansfor operating the same, the forked piece E, carrying the saw F, and thespring I, secured to the pitman and to the forkedpiece, the said pitmanand forked piece being pivoted to the lower end of the lever H by thesame bolt, substantially herein shown and described.

SAMUEL P. DRESSER.

\Vitnesscs:

It. H. FRANKLIN, H. N. COMPTON.

